Symbian3/SDK/Source/GUID-1E4FFC56-8473-4E0A-B2E2-4E8DE8B1D00F.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 11 Jun 2010 12:39:03 +0100
changeset 8 ae94777fff8f
parent 7 51a74ef9ed63
child 13 48780e181b38
permissions -rw-r--r--
Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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ae94777fff8f Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE task
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  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
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<task id="GUID-1E4FFC56-8473-4E0A-B2E2-4E8DE8B1D00F" xml:lang="en"><title>Increasing
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the Priority of a Third-Party Application</title><shortdesc>This section describes how a third-party application can increase
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its OOM priority by using OOM Monitor APIs.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>
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<context id="GUID-FD9A15E9-6313-4BD3-A52A-7E3B71D39B37-GENID-1-10-1-10-1-1-8-1-5-1-6-1-5-1-3-1"><p>Third-party applications
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that needs to be running all the time can increase their priority to <codeph>High</codeph> from
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the default level (<codeph>Normal</codeph>). By increasing the priority, applications
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can protect itself from being closed by the OOM Monitor. For example:</p><ul>
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<li><p>IP Phone application receiving IP calls </p></li>
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<li><p>Instant Messaging application receiving messages</p></li>
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</ul><p>are applications which listens for events from the network all the
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time.</p></context>
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<steps id="GUID-01A482C7-3004-484D-9948-B0B892E913AF-GENID-1-10-1-10-1-1-8-1-5-1-6-1-5-1-3-2">
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<step id="GUID-83631E4F-71D0-4FD2-8FD6-46689AAFA761-GENID-1-10-1-10-1-1-8-1-5-1-6-1-5-1-3-2-1"><cmd>Create an OOM Monitor
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session</cmd>
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<info><codeblock xml:space="preserve">ROomMonitorSession ioomMonitorSession;
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CleanUpClosePushL(ioomMonitorSession);
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User::LeaveIfError(ioomMonitorSession.Connect());
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</codeblock></info>
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</step>
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<step id="GUID-3033BB28-ACC5-440C-9BDB-D1BC36CD001C-GENID-1-10-1-10-1-1-8-1-5-1-6-1-5-1-3-2-2"><cmd>Set the priority
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for the application to <codeph>High</codeph> .</cmd>
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<info><codeblock xml:space="preserve">iOomMonitorSession.SetOomPriority(ROomMonitorSession::EOomPriorityHigh);
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DoCriticalBackgroundProcessingL();
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</codeblock></info>
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</step>
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<step id="GUID-5B3E8176-528F-45E7-B1CE-57ADCFAB5C6C-GENID-1-10-1-10-1-1-8-1-5-1-6-1-5-1-3-2-3"><cmd>Close the session.</cmd>
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<info><codeblock xml:space="preserve">iOomMonitorSession.Close();
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</codeblock></info>
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</step>
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</steps>
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</taskbody><related-links>
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<link href="GUID-CE308C71-D8B2-43B3-97FD-B868285ED5FB.dita"><linktext>OOM Monitor
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Priority</linktext></link>
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<link href="GUID-88752800-83BD-4845-80A0-6B65D8D81924.dita"><linktext>OOM Monitor
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Reference</linktext></link>
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</related-links></task>